I just brought a GRP .21 about three weeks ago. I did the break in and I'm having some issues with it bogging out in the middle of the acceleration curve. It's like it's running rich but if completely bogs out when I lean it any further. Once it's warmed up it's a scalded dog but once it cools off it does the same thing bogging out in the middle of the acceleration curve. Oh and how about this, it accelerates fine when the glow plug igniter is attached to the glow plug. I'm running OS p3 Ultra Hot glow plugs which a lot of guys recommend.
I've heard that the GRPs run cool and take about a gallon before it clears the break-in so please let me know if this will improve over time as I run more gas through it.
HALP!!!