3 on the floor shifting.

[Pancholasvegas]

Hey guy, I just picked up my first chevy ever... '69 C10 long bed with a 350. Couple quick questions for all of you experts. This truck was a 3 on the column originally. One of the previous owners switched it over with a Mr. Gasket floor shift conversion kit.. Now. I have another truck that is a 3 on the column, and I have owned 4,5, and 6 speed cars/trucks. But this thing is a nightmare to drive! Are there any tips or tricks to this messed up floor shift? I can't seem to find 3rd to save my life, and sometimes neutral is just as tough! Second and first are simple enough, but 3rd is nowhere to be found 8/10 attempts. (At speed, parked I seem to be able to find it.) Ideally I would like to switch this over to a 4 on the floor, but I'll need to round up a transmission to do that first. In the mean time, I need to be able to get this out of the driveway and not be a burden to everyone else on the road!
Thanks,
Pancho