Technical Bump Steer - Lesson Learned

My heap came to me with Corvair IFS, included the steering box and idler arm perched out front of the grill and tied into the water pipe bumper. I've regretting not just going solid axle but wasn't ready to take the plunge so I fitted a suitable rack and pinion. I knew the tie rod angle was wrong but with a new engine, trans and rear end also in progress I just set the alignment and moved on. Truck's been on the road for quite awhile now, mostly sorted mechanically but always very jumpy on rough roads. I was playing with the toe in a few weeks ago, half heatedly bounced on the front with the toe gauge in place and noticed a large change in the toe in with suspension movement, more than I ever figured it would have.

I consulted with HAMBer suspension guru Kerryinnz and did some pondering. Quite the dilemma, couldn't move the rack up, outer tie rods needed to come down but no clearance to the rims if underneath the steering arms, which are integral to the spindles. I ended up switching to heim joints, which just clear the rims and give me the proper angle (yellow line).

The difference is astounding, goes down the roughest roads straight arrow, no jerking of the steering wheel. A huge improvement. We'll see how the heim joints hold up, thread search here revealed many guys use them. Anyone with modified suspension or steering whose car jumps around would do well to check toe in change with suspension movement.