For the steering lock-up, even with toe-out, I don't have it when the caster blocks and spindles are new. When they get worn significantly, then yes. I tend to replace those at the first sign of locking up, but if you're having problems when new, a trick I used to layer CA glue up on the caster block where the spindle stop is. I would put some glue down, heat gun it a bit, more glue, heat gun.. etc, until it was too high, then use a small hand file and file it back down to the ideal stop size that caused it to not bind.