I mixed up some DP90 and 401 at 1:1 instead of 2:1 and shot it on the underside of thr floorpans.
Does anyone know how this will affect the finish?

If it went on ok, you should have no problems.

It probably set up pretty quick, didn't it! I think that as long as you got good coverage it should be O.K. as stated.

Thanks, I feel better now. Next time I will try to pay more attention.