I have a graco HVLP 4900 with power cart. I keep having trouble with my HVLP-T gun. It sucks! It keeps leaking. At first it scuffed up the needle now it's some internal leak. What a mess. I wan't to trash it and get a better quality gun? I love using the HVLP sprayer and wan't to improve my system. Also, is there any trick to spraying latex without thinning it. I'd like to use the HVLP instead of my airless when ever possible. Is this a step in the right direction? If anyone has any insight I would greatly appreciate it.