How bad is it leaking? If it's just a little, you may be able to use some teflon tape to solve the problem.
If it's leaking really bad like I suspect it is, it's because the "clutch pipe" as you put it is actually a pressure fitting and needs to be under a decent amount of pressure (about hand tight and then a 1/4 turn) in order to seal properly. After tightening it up that much, you should not be able to spin or move the line at all. It should be solid at the threads and the coupler.
Get back here and let us know how it goes.