Two questions:
-When you push your bolt forwards (when it's gassed up) is it hard to move it or is it relatively easy? If it's hard then your LPR body may have a dodgy seal causing the solenoid to supercharge and cause leaks
- Have you checked your diaphragms (as suggested above)?
If it's really the hosing, which I've never seen tbh, then get some more and replace it!