Leaking Fuel Pressure Regulator

Cali 1100i - 2001. Having laid up the bike for clutch replacement the re-assembly is almost complete. Shock-horror! The (externally-mounted) fuel pressure regulator leaks badly. Is this common after being left “dry” for a few weeks?Is the regulator user-servicable? A quick search under its part number 29112760 shows it as no longer available, although there are auto-substitutes. Is there an alternative bosch or weber part number?

Sorted, but I don’t know how! Checked hose clamps, etc (no problems found). Overnight soaking in fuel and no leak. Wierd or what?