[Jim Brierley]

Modern, straight guides are always a tight fit, they need to be. I installed a set for a friend a few years ago, one guide was not as tight as I liked it to be, I used Loktite to be sure. Fast forward several months and the engine had another, different, problem. When torn down, that guide had slipped downward at least 1/2"! Since that incident, I buy guides from Mac's. they are 1-piece but have a shoulder for the spring to seat on, so the spring holds the guide in place. Another advantage of them is that you don't loose the length of the stock guide/spring relationship, so no loss of spring pressure.