Also guys (sorry alot of questions) is the model number of the belt I need for my Super 8 125 the same as the 150cc version or the 50cc version?
150cc version is 23100-KEC4-C00
60cc version is 23100-KEB7-C00
Not sure beings you are in the UK but the US version of the Agility 125cc uses 23100-KEC4-C00 for a CVT belt. Best to call UK KYMCO and ask them or see if they can provide you with a parts site.
from the UK Kymco site
TECHNICAL ENQUIRY
To contact KYMCO in the UK or Ireland, please fill out the form and we will e-mail you back as soon as possible.
Otherwise please contact us on the following number.
Tel: 01743 761107
Here's another page from their site (looks like you can ask about parts)
http://www.kymco.co.uk/pages/contact/technical-enquiry.htm