AXY! I missed ya Bro! Will you be my BFF again?
Starting w/ the seat... You can take it off the bike, and bring it to any upholstery shop. Auto/Marine/Couches/whatever.
For well under 100.00 US they can remove some of the harder foam, and re-staple the seat.
(make sure you hit the solved button there)
Using the forum "search" you will also find a few dozen posts on how others remedied their scooter seat issues.
For the sprockets... The Kymco Venox just might have the same machining for mounting. Go to
www.kymcopartsmonster.com/See if the part numbers for either of the sprockets are the same between your bike, and the Venox.
If they are then the Venox does have some after-market sprockets available.
Again a quick forum search will guide you to the relevant posts for sources if you can not find them w/ Google Croatia.
If your not in Croatia then any old google will do.
I can swear you must either be Axy or live in the same region.
You posted , and asked us nicely to be kind. Within three posts you started yelling at us for attempting to help in our own ways.
Please don't take this offensively... This is the best forum I know of in the common guy scooter world. The members here are kind, and generous w/ their time but when riled up... These dogs bite.
Hopefully you will understand this is not one of those flame the new guy sites or just some random group of Ahole kids passing time waiting for someone to come in to play around with.
As suggested... Take a breath, pull up a chair, and sip a cocktail while you get accustomed to us.
You'll find everyone is here to help.
I am the ONLY one here for no other reason than to bust balls. Croatian right?