HI. I'm new to this site and didn't see any posts about this topic. Here it goes. I have a 1979 yamaha srx 440C. I'm trying to restore this sled, It has always run, but never too well. It has 120 psi in each cylinder(checked with 2 gauges at wide open throttle), Carbs cleaned(290 mains, don't know the others), new fuel 32:1, clutches cleaned, and soforth. I was wondering if there were any major problems with this sled, ie: stator, coil, 12v regulator, etc. It just seems to be really doggy(for lack of terms)at the start, and smokes a lot. It has decent spark,(I saw with inline spark testers) but I don't know how to test this to see if it is enough. It engages at around 3500 rpm. Is this good? Oh, one more thing, were can I find the steering boots? Does anyone sells these things aftermarket. I've checked and haven't found anything, even the junkyards. Any help would be appreciated. Thanks.