Tried the CXP M.A.R.S out yesterday and wasn't to impressed with the flathop and .25's..after lunch I decided to dump all my mags and refill with .28's..WOW!! What a difference it made...going to try even heavier ones as well next time.
i tend to find flat hops to be a bit finnicky, sure they're perfect when they're set right, but a gnat's fart is the difference between too much and not enough.