I would check the bearings in the diff case, I had a bad one and it felt like a ton of drag brake on the car

make sure your steering link from servo horn is not rubbing against the post on the top plate

that's true,it's funny because it happened to me tonight so I took out all 3 diffs and cleaned the bearings real good and now it's butter

Thanks for the input. Started taking it apart but ran out of time I’ll report back soon

Question was literally asked and answered a few posts above yours.

Hopefully these will last longer than the MIP dogbones in my 13.5 car

Is Savöx 1258TG a good servo for the B64D?

Yes they're great for 4wd buggy. They do have glitch/brown out issues with some.radios. I think spektrum, not sure but anyway you might need a glitch buster

Where are most people putting the battery, back or forward? Stock is back.

Doesn't seem to be an issue with the latest Spektrums anymore.

Running a 60A HW Justock with 9.5t motor and only 2A BEC and 1258TG, no problems with my low-end Spektrum DX5C and SR415 receiver.

Run a glitch buster you won't regret it

Only issue I've had with the more inexpensive Savox servos was when I mounted the transponder on top of it. If the servo was moving when I crossed the loop, the signal strength for the transponder registered much lower on the computer and I ended up missing a few laps. Moved the transponder to the chassis and haven't had any issues since.

Given all of the little issues I've heard of with the Savox stuff, I can't understand how they got to be so popular.

I've been running the same Futaba servos for a decade and I'll probably leave them to someone in my will.

Okay so I pulled it a part and found possible water inside front bearings but didn't see anything obvious damaged or defective. I replaced diff fluid and bearings and made sure diff was shimmed properly. does seem to roll better but if I go in a tight circle (which could be normal???) as soon as let off the gas it stop like brakes are on but rolls okay forward now. is that normal? is that the nature of 4wd's thanks

Slowing more while turning tight is normal, but something is off if you're experiencing drivetrain bind at full steering lock. Check to see that your dog bones aren't coming in contact with any other parts when you steer. If they touch anything, you caster blocks and spindles might be assembled incorrectly (mixed left and right parts?).