Backorder on Huma regulators?

I bought a HUMA for my R-10 about a month ago, direct from the source, was delivered to South MS in 5 days. I was so impressed with the shipping, I ordered one for my Air Arms S 510 XS, same story, was here in 5 days. Had to turn up the reg to 135 BAR for my .177 BSA. HUMA supplied it set at 110 BAR which was a little low on FPS compared to stock velocity. Now shooting an avg. of 975 with a 10.3 pellet. The S 510 in 22 cal. also had to be turned up to 145 BAR which was still a little lower than stock velocity, but not enough to warrant another take down. Gun still makes 31 ft lbs. so not giving up much.