Got a ninja sl2 shp for my self for Christmas.

Can I set up my classic valve to not vent out the back at 1100 psi?

I've seen the info on this forum before I believe, but could not find it with Google or the in house search.

Alternatively I could replace the gas through grip with a regulator? Is there such a regular that would be ideal for taking the pressure down to 800?

Thanks in advance.

Jim