A/C issues.. Are these normal?

[-=Jeff=-]

So my A/c sort of works.. but i want it to work better (if that is possible)

Last year when I went on a 3 day trip with the car it had a hard time keeping the interior cool when the sun was out, if the sun was behind a cloud the AC worked better. Then I thought it was low on charge (it is converted to r134a)

This year I have the same issue, but not only with temperature but Volume of air coming out the vents. I replaced the blower motor with one I had. the blower motor I installed seemed to spin better then the old, but the volume is still not there

When I had the Blower out i looked to see if the Evaporator was plugged with junk, but looking through the motor hole, the Evap looked okay

Where do I need to look now? I know on a 90 deg day currently i get about a 30 deg drop out the vents so my A/C charge could be low, or maybe my Compressor just is not working as it should. (need to throw gauges on it again)

about 2 years ago with the AC on, the compressor did make and odd noise, I shut it off and then tried it a few weeks later and it seemed fine then and no issues since.

Since I have had to replace most of the accessories off the belt, maybe the compressor is bad and it is not cooling the ac as much. since on a High blower the ac air seems cooler then on a lower blower setting, while my Daily ride the air is cooler if the blower is slower...

Dunno, looking for suggestions and ideas of what to check next