I note you say it has the hollowpoint 3 way. These have a very short throw to help speed up cycle time, but downside is they are much harder to time spot on. The seals might also be worn but spares should be available - give Belsales a call?
I'll compare the 3 way hose routing on 2 of my cockers (slide and hinge frame) and get back to you ASAP
http://www.belsales.co.uk/
I'll compare the 3 way hose routing on 2 of my cockers (slide and hinge frame) and get back to you ASAP
http://www.belsales.co.uk/