Not really sure why but I can't seem to get this to work right.  I continually have air bubbles in my lines and keep getting leaks.  Is there a certain type of tubing i should be using?  Some of my tubing is pretty rigid but some is flimsy, does it matter if i use 2 different types of tubing.  This should be pretty straight forward but I can't get a consistent drip at all.  Probably due to the air bubbles but I can't seem to get them out.  Is there a certain brand of valve i should be using?  My pressure relief line uses "t" valves instead of the "y" shaped, does that matter?  I couldn't find the "y" shaped.  
	
	Dale