The manual states that velocity is a function of the balance between HPR and LPR.
So... I guess if you want the HP higher you'll have to lower the LP and vice versa.
I suppose the marker is faster when LP is higher and HP is lower, according to the manual it should cycle faster anyway.
Oh, and as y'all can tell I got my Type-R a couple of days ago. I put on a real regulator and a small drop forward, then I did my patented POOR MAN's Trigger job and I am as happy as a fish! (in lava?)
Poor man's trigger job:
Take a couple of small, tight orings and slide them up the trigger. I got about four ones there over the small bend and setscrew. This eliminates some of the wobble.
Then you take the microswitch spring and bend it a little so that instead of straight it is bent a little outwards making for a snappier return and higher rates of fire.
See illustration, trigger to the left of the ascii representation of the microswitch spring and microswitch itself (and frame) to the right.
Microswitch spring Before:
Microswitch spring After:
Don't overbend or you'll be in trouble. Be gentle!
And don't take my word for it that this actually works. It VOIDS warranty!