First Drive after building, Major shake

Not enuff + Caster, causing "shopping cart" wheel shimmy.
Prob set to factory specs. for bias tires.
Check the alignment setting from the alignment shop, if the caster is near "0", or negative -
Try having the alignment set to attached chart for radial tires.

View attachment 1715318313

Bad tire/balance, with bad shock is viable, - brakes - not so much.

So the Alignment sheet reads:
Camber LF 1/4 + degree RF same
Caster LF 1 + degree and RF 1 1/2 + degree
Toe for both 1/16"