jaybird

Hello all, I would like to rebuild (service) the shock on my 2003 315R. I have been unable to find any specifications or parts to do this service. Apex does not show seals available and the book does not give any specifics. Does Montesa expect you to replace the entire shock when it's time for a service? Any advice on where to get seals, bushings etc would be appreciated. I have already replaced the stock spring with a heavier one and added the 'lift kit' to the rear of the bike. The shock currently has 142# of nitrogen, which is what was recommended to me from another site. I have no idea what the shock had from the factory. Thanks in advance, Jay in Texas, USA