The clines are very sensitive to anything in the line,even the smallest debris. Bypassing it is a good way to narrow it down to where the trouble is. After a few years of needing to clean mine out every now & then,I finally put a filter in-line before the Cline,its been running for 9 months without a clog now. I dont hard-mount my Cline,just leave it dangling by tie-wraps & make sure it doesnt touch anything else.