Hi guys new here and looking for some help on my wife's Blaster. It's a 1986 that a few years ago the in-laws gave to us since my wife was the only one of the three girls to ride it. The quad needed some work, so I put a new wiseco piston kit in it and FMF pipe and silencer boyesen reeds a 28 mm Keihin PWK carb uni filter took the lid off the air box now the quad is pretty peaky power-wise. Would porting and head mods help? Who does good work on this quad ? How much would it cost? I put the PWK on cause the stock Mikuni was shot! Also what do you guys do with the hole at the top off the case when you block the oil injector? Appreciate any help you guys can give me! I'm looking for more torque to make the quad a little more user friendly for trail riding!