Zachaweia17

Also if the power valves if they would work as well

I know this is a banshee sight but I can't find the answer to my question anywhere on other forms. I have a 1997 Yz125 that needs a completely new cylinder and I found one that is from a 2003 and wasn't sure if it would directly bolt on. I know I would have to get a different exhaust, but other than that is there any reason why I couldn't do that? Thanks

What would you suggest to start with my mains and pilots at?

It has 200 main jets and 25 pilot jets

I don't know what jets are in it now. I have never heard it run before but the SuperStock pistons say it needs to be rejetted.

My carbs are 28mm

I have a 1999 Banshee with tors delete, stock crank, stock head, stock air box, with K&N single filter, stock carbs, stock exhaust, and 64.50mm Vito's SuperStock Pistons. I My elevation is around 800 feet and will be riding in 75 to 85 degrees F. What should my adjustments be to run right. I will be using 93 octane with 32:1 R-2 oil. Thanks!