Jet sizes????

[brcree]

  I have a 76 cb750 k6, bought it with open 4 into 1 pipes and cones. Not sure what jets are in it now. I placed a baffle in the pipe and want to put the orig air box back on. What jet sizes should I start with? The pipe has black suet in it now I guess from running rich. Bike runs well after it worms up.

[Re-run]

Put the original jets in it. Exhaust changes rarely require jet changes except if you use drag pipes.