It could have been a reference to Samson pipes that you read as there are numerous reports of their quality not being up to scratch. Usually around weld joins and rust issues. But also plenty of people who think their pipes are ok
Dyno mate , I have read reports from the states that these Khromewerks HP-Plus " drag pipe" baffles work well in the V&H straight system bikes I've 2 sets to try , one that is " jacketed " ie in a solid pipe already and another that is "open" Trying to attach photos ( done ) . This is the "open" , the other is the same baffling just within a length of pipe
" The Cobblers children are the worst shod " so I have not tried them yet , always working on other dudes bikes haha...
I would not recommend Samson pipes as the fit and finnish is shit and their warranty sucks. It took me 3 months of constant phone calls to get them to send a new exhaust over after I returned the original at my cost. Samson would not post to Australia so I had to have it shipped to a mate in the US and have him post over. When the new pipe arived it was the same as the old one I sent back. I had to put in a vice and smack it a few times with a hammer to get the bend right. Be warned there pipes are cheap china crap