[vettestr]

I use Network a lot but as I told you any shop should be able to check the thrust angle during a 4 wheel alignment. Thrust angle is to simply verify or find the true driven centerline of the tires or thrust line. The rear of an IRS is adjustable but the front spindles are fixed for the most part. But none the less , easy to check and part of the alignment as the new electronic units just need a button push.

On a (apologize for home built) home built car the extended centerline or merge of all 4 wheels can vary beyond ideal. When strange problems arise with suspension it is a good thing to verify. You said it happens during acceleration but not decal. so look at camber changes.