I have a R-134a retrofit and recharging kit i got last year... now, when i put on my AC, it blows a tad cooler then the vent does.
Here is my question...Do you think i have a leak in my AC? If not, im gunna hook up the R-134a system today, gas her up and try her out. please help me guys. thanks.

Probably. I believe they're supposed to put out 50 some degrees.