Yep, after reading the other post where it is explained a nozzle screwed into the manifold has cracked!
But in this case, are we sure it has a 2.5mm internal hole diameter (most manifold spuds have a bigger internal diameter)? The set should ideally be matched, in some cases this can be critical.
Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
2 miles A1, 8 miles M62, http://www.Lpgc.co.uk