Carb trouble...I think

[Curt750F]

So I just had a stage 1 dynomax jet kit put in my 1980 750F by a trusted mechanic.  The bike ran great for about 3 days and now it refuses to accelerate once I get up to 4500rpm...it basically just bogs down and does not perform at all.  There is a tad bit of smoke coming out of the pipe...I have a mac 4 to 1.  This could be me but at the higher rpm I also hear a bit of a winding sound coming from one of my camshafts.  For the life of me I cannot figure out what is going on.  Any Ideas?

[OTTODOCTOR]

     Ran good for 3 days?? Sounds like you need to take it back to your trusted mechanic and have him pull the cam cover to investigate the noise before you do anything else .