Miguel,
I think you have somehow misunderstood? I dont have a problem ..it was you that had a problem and I dont think it is heloful for anybody to say they know the answer..but will not tell? Get it now? I was feeling that you were not getting an answer..which you didnt. If you re read you will see that i found a solution, courtesy of Richard Slater himself, Clem and Keith. I dont understand the snowflake attitude of people who waltz off in an offended huff either.. There is another thread on here about tank repair where Grant has commented and the guy asks who can actually do it...I wonder if the help will go that far? If someone knows but wont say, better not say anything maybe? Fyi, i have met Grant , including back in 2006 at the Cor Dees museum opening event, and used him for Laverda work, and the shock refurb he did was second to none., and just wish he would lighten up! Lets hope you can get your Laverda head fixed, I think it is one of the big problems with our bikes long term, so the knowledge of how to fix them should be shared not hoarded.
Best wishes