I tried that while I waited for your reply, unfortunately it did not work. If I redirect to shipping failure page that's what I get , with error message 'ilegal' (dont remember the exact words, actually 3 words with / between them
in full report it contained our UPS pass ! so I had to remove the pages all together and reconfigure the cart back- not fun .
if I dont redirect it goes directly to gateway without any shipping .
We use payment gateway, Authorize Net and those are the form tags that are passed thru.
I will make one more attempt