replace all o-rings in offending area do not lube bottle o-rings! also listen very carefully to leaks
With regard to the advice to not lube bottle o-rings, a clarification:
The danger of lubricants with bottles is at the high pressure area, (the contents of the cylinder which could be at 3000psi or 4500psi). There is a real risk of a flash fill explosion under certain circumstances
Never bring oil or lubes to the fill nipple
The o-ring concerned at this moment is within the fill nipple, if necessary replace the nipple o-ring but it's cheap and easy enough to replace the fill nipple assembly
For the majority of people the regulator should not be disassembled, some can be user maintained (in accordance with manufacturer directions) such as adjusting high/low/mid pressure - all of which are 850psi and below
The bottle o-ring outside on the top of the threads can be lubricated if you want, it's at the lower side of the regulator thus not at extreme 'flash' pressures. It aids the seal of the Asa threads. If it is old and battered it can be lightly lubed - but it should be considered a cheap disposable item and replaced if it has become bad
With regard to speed posting, you have the pattern of new members seeking access to classifieds
As chair chimp has noted, new members are both restricted by the 20 post rule and a time delay (I think 2 weeks)
If you do want classifieds access then look at the rules guidance in the classifieds area. You can gain instant access if needed buy upgrading to platinum membership, otherwise take your time and avoid coming to the attention of moderators as they could impose additional restrictions on new members pushing the boundary
