wild 300 jetting

[skoolball23]

I've finally had time to start messing w/ the Gas Gas Wild 300 in which I had a custom pipe made for it. I have pilots up to 50 and main jets up to 188. I am going to order some and what sizes do you think I need to go up to in order to get this thing jetted perfectly? Also the pipe is leaking where the 2 connect. Do you have any ideas of clogging up the leak? I was thinking maybe exhaust sealant, heat wrap, and/or o rings. Any help would be greatly appreciated.