Stoptech Brake Issue: Brand New Calipers Leaking

Anyone here with Stoptech brake experience. I've installed the full Big Brake Kit from Stoptech on a '97 F355 Spider. Stoptech said it would take months to get yellow calipers so reds were ordered instead and then painted with VHT brake caliper paint. They were then baked and black "Ferrari" script applied. Brake system was installed and meticulously bled. Calipers were thoroughly washed down to remove any trace of brake fluid. Next day yellow paint was bubbling up! Seems the calipers are leaking at the thread-bleed screw interface. Cleaned the fluid again but more keeps seeping up.

Anyone experience this before? I've not seen this happen with Brembos.

I tried tightening the bleed screws a tad more but that didn't fix the problem.

I've called Stoptech and they want me to send the calipers in for testing. A real pain in the arse to remove the all the calipers, wait a week, then reinstall and rebleed all over again. If I go through all this hassle I hope they'll just send back proper and FUNCTIONING yellow calipers. We'll see. Otherwise I've got calipers that leak, need R and R and refinishing as well. Ugh!

Any help or suggestions here much appreciated.
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No residue. I took a white cloth and tested to make sure there was no residue after I cleaned up the first time. Went back this time and used a box of q-tips to clean out the full length of the bleed screws. Spent two hours cleaning every possible drop of fluid! Washed with soap. Shot brake cleaner down the screws. Rinsed. Repeated. Etc. Drove the F355 and with the biggest tires fit to a 355 and the big brakes she stops with gut wrenching force. HOWEVER, there's more fluid! Really irritating!

A buddy of mine thought he was funny when he joked: How do you spell relief? BREMBO.