I start by placing my injector(s) open end down (without the nozzle) on the griddle, and place my mold (open) and lami plate (non bait side/outside down) on the griddle then I rub a bit of worm oil on the lami plate where the plastic will touch the cavities. As I heat my plastic I prepare my clamp(s) and place my nozzles nose down on the griddle roughly 30-60sec before shooting. Add my glitter/pearl to the plastic, clamp, add nozzle to injector, suck and shoot. After about a minute or so I remove the clamp(s), removing the lami plate without the baits moving and remove it from the mold then removing the runner, then placing the mold closed with the plastic side down (be it backs on the wutz-it) back on to the griddle. Heat up color(s)(2,3,4) and removing the mold right before the last ding on the micro, clamping it and suck and shoot.
I keep the griddle at 250-255 degrees while shooting lami's, but when doing solid colors I keep it @ 350 using it to keep the Pyrex a touch hotter than if it was on the work bench and also heating my injectors.
Found that removing the nozzles keeps the O-rings from swelling and becoming a pain in the rump. When placing them on the griddle nose down for 30-60sec it allows the nozzle to heat up without the O-ring swelling to the point of having to smack the nozzle into the injector to get it to fit.
When my injectors are on the griddle I first place them nose down on a flat surface (usually a lami plate) then pushing the rod down till the piston becomes flush with the surface then slowly pulling it back up 1-2 inches away from it, thus allowing the piston to be heated without massive swelling/rubbing of the O-rings.
After I started doing this I have been able to almost double my production out of an 8oz batch due to not having a .5"-1" plug between my nozzle and piston (works 10x better at 350 but not for lami's).
Hope this helps,
Drew
*EDIT*
~Also, placing a mold wide open on the griddle @ 250-255 and laying baits in while you heat up your clear then removing them, sticking eyes on and dipping has made the clear dip bond 10x stronger, no peeling/lifting or falling off. It also helps those little eyes stay in place from my fat fingers moving the baits around before the plunge into the clear.~