alignment issue

[wagonmaster]

67 camaro with global west upper and lower control arms, think factory spindles, factory style power steering box and steering linkage,
camber is -.3 -.1
caster is 5.2 4.6
sai is 8.9 8.6



when you turn to lock either way it will pick up the opposite side of the front end and the tires start to scrub. Been doing alignments for years and never ran into this before. anyone ever ran into this.
have not measured pitman/ idler arm length or distance to ground yet or done lock to lock on the alignment rack running, will do all that tomorrow and get back with findings

Looking forward to cruising the forum
Thanks in advance Mike