thanks for all the replies lads youve all been a huge help! ill order my parts really soon, and if i have any cash to spare ill buy the battery n motor anyways. Thanks for the link to mechbox.com too, its really clear and helpful. Disassembly doesnt look too bad tbh.

I only have one problem now.... I know what parts to buy, but there are so many different brands and models, how do i know what to choose?

What piston head would you guys recommend,
And what cylinder would you guys recommend?

do i need a new cylinder head?

also does it matter what brand of spring i buy? i mean if theyre M90 then theyre all gonna be about the same power right?

Thanks alot again,
Avose