Hiya Dan... only just read through this one - Just thought Id mention the fact that thats a good ad for Forte! ( no, I dont work for them - but I do buy plenty!) Its very good stuff all round, though not cheap, but its a case of you get what you pay for I reckon - PAS treatment of thiers saved me probably hundreds on a troublesome P 605 last summer! II dont know if you folks know but Forte produce a sort of "trouble shooter" booklet for such things.. Excellent little book , can save loads of time..Hope this helps too if someone was thinking of trying the stuff! So,there you go/excellent result..All the best. Mike G