Pro5.0 Shifter Problem

Alright, i searched around, and couldnt find anything like my problem, so here goes
The Pro5.0 shifter i bought came packed full of grease, and i installed it like that.
After installing it, my transmission slowly started poping out of 2nd gear more and more, and i figured it was time for a rebuild. Today, i pulled out the shifter and found that all the grease was gone. It had i guess melted down to more of a liquid, then seeped past the plastic bushing on the buttom of the shifter, down into the transmission. My question is could that grease damage the transmission? i dont want to rebuild it, put the shifter back on, and start having problems with it again =/

nah i kno that 2nd is shot, i took the stop bolt out and took it for a drive, it still pops outta 2nd, but usually only on downshifts. with a 116k on it, im not surprised, i kno the previous owner beat the $*#*)(@ outta the car. Thanks for the tip about the grease tho, it kinda worried me.