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Difficult cold start is symptomatic of the exhaust valve gap closing up over time.
I think the valve gap is .004 inches for both intake and exhaust, it's in the manual, and is relatively easy to do, once you get all the plastic off. There's videos on you tube on how to do it, open up the variator cover, put a wrench on the nut and turn the engine to top dead center, check the valves with a feeler gauge, et voila.

My 500r starts pretty easy after I adjusted it, but my 500ri left me stranded a few times because I don't think it has a heated element for the fuel injection, so if yours is fuel injected, that may be the problem. I just ride the carb model now, and it's fine in the cold.

Sorry, don't know how to do pics, but it is brand new in the factory box, complete with header, bolts, and mount for the Exciting 250. You will need a new gasket for the header, but that is easy to get. I don't know if it fits the People, but if you think it does, let's get it on.

I've got one mounted on both my 250 and 500, and they're awesome and no longer available in the USA.

Best I can do is send it to you, if it fits, you mount it and pay for it. If it doesn't fit, you send it back. If you bust it up trying to see if it fits, you keep it and pay for it.

Very easy installation, all parts provided, the header and 4-Road muffler is all stainless steel, very nice and very Italian. Multi lingual instruction manual is also provided, but it is mostly in bizarre Euro pictographs and Engrish Pidgin. I'll look though it to see if it lists the People as fitting.

Pm your address and I'll ship it to you for examination, prolly cost $20, so $300 postpaid.

A deal between gentlemen precludes any nefarious intent, and as such should not involve any complaints. My word is my bond, and I expect yours is as well.

Cold start problems are usually attributed to improper valve clearance.

If you have more than 1000 miles on it, it may need a valve adjustment. Most often the exhaust valve closes over time as the engine settles in.

Check the clearance with a feeler gauge, should be .004" intake, and .006" exhaust, if it's close to that it's good to go. The exhaust valve has to handle the hot gas so it is usually the one to change.

Any service pro can check it for you if you're not sure, but it's a good skill to have if you're adroit with your scooter.

My Super 8 150 hits on the first crank every time, unless the battery is low, then I'll hook up the charger to get more amps, and bong, I'm gone.

And now, for something completely different...

Since it pops on deceleration and at low RPMs, you might do better to replace the pilot jet to a 40 from the stock 38.

The slow speed jet is running the engine until about 1/4 throttle, and that's where it pops.

I have a Leo Vince exhaust with a 40 pilot, and it popped too much with the 125 main jet, so I have a 120 main jet now. It still pops, but not as bad, and usually only one big pop after shutoff.

You can also tune the idle mixture screw to refine the low end, turn it clockwise until it stops, then back it out 2 1/2 turns and see how it performs, then you can go in or out accordingly. Out is rich, in is lean.

I'll give you $30 for those sliders.

You probably have a big main jet in the carb with that free flow air filter.

You can drain the fuel bowl, loosen the fore and aft clamps to the carb, work it loose and flip it over to get the fuel bowl off. The main jet should be a 108 and the pilot jet should be 36, you might have a 115 and a 40, and that's where all the fuel goes.

With the stock box, if it runs rich, the jets are too big.

The 7 gram rollers are leaving the 5gram sliders with nothing to do, giving erratic performance. Try all 6 gram rollers, the sliders are getting hung up.