I figure there is enough people on here with more experience then me that can help me out why I am still having drum problems.

I have a jeep cherokee and a D-150 that I have rebuilt all four brakes on each one in the past year.

The D-150 always gave me issues with vibrations, even after getting the drums turned, but its my beater vehicle so I didn't look into it.
The Jeep started giving me some bad vibrations from the rear under heavy braking about a month ago. I took the drums in turned, there was a flat spot in the one, put it back together and they are still giving me a massage when braking.

Could the shops brake lathe be slightly out of round, are my axles goofy, I can't really figure it out. Both had new pads and wheel cylinders put in when I first replaced the brakes.

_________________
Get out your aluminum magnets!

I'll assume that your trucks have front disc brakes. What makes you think that rear drums are causing your brake pulse? While I often see (minor) out of round conditions on drums, most pulse concerns usually stem from thickness variations on disc rotors- which is caused in turn by rortor runout or warpage. Pulse can show up on braking as: steering wheel shimmy/shake; brake pedal "jerking"; whole car "jerking" (the full body massage); or any combination. Bent rear axles can cause problems, but drums have to be pretty bad before they have the same affect as a bad rotor.

_________________
63 Valiant Wagon
225 - 4 bbl

I've seen drums that would gradually go out of round with use, but eventually relax back into round; very strange, but I ended up alternating between 2 sets roughly 1-2/year as a cheap workaround.

I've never had to replace the drums on my '85 Cherokee, just the rotors after they got chewed up by a frozen caliper.
The replacements were cheap Chinese and rusted like crazy, but seem to work OK.

I haven't driven the truck in a couple months since it is 2wd and it wouldn't make it during the winter months with all the hills and snow, so it may have gotten better.

KBB: you may be right about the drums braking in though, the last few times they have been a little better.
The dana 35 axle isn't really a "tank", and the u-joints are most likely original so it could be a few things.

_________________
Get out your aluminum magnets!