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Message: <blockquote data-quote="Orl1mjf" data-source="post: 1472500" data-attributes="member: 18504">Try this- I had SN95 heater tubes leaking right at the 2 piece joint that screws into the intake manifold.Leaking like a water hose with a thumb over it!I was asking around, trying to find a new set of tubes, or find out if these could be fixed...I couldn't find any replacement tubes for an SN95, and everyone told me they were not serviceable.Since the set I had was leaking, and I figured I couldn't make it worse, I decided to take them apart and see if I could repair them.I took off the lower threaded portion of the joint, and found 2 grooves on the inner portion that appear to have had o-rings in them. So I cleaned them up, installed some o-rings, lubed it up, put the lower portion back on, and used a punch with increasing diameter to expand the bottom swedge back into place.I put 17# on the system, and it held fine. Then I drove it today with the 13# cap, and it didn't leak a drop.So if you were wondering, the heater tubes are serviceable at the spinning joint.</blockquote>