The guides are Manley ( possibly no longer in production, also the valves were from the same manufacturer ), these were fitted quite a few years back by one of the top Superbike race builders at the time. Although I do all my own assembly, this was something I entrusted to an acknowledged expert at the time !
Where I live, dyno facilities, let alone with a competent operater, are few and far between. Travelling distance is the devil. So, I do the best I can, with what I have, like countless enthusiasts ( some who achieved amazing things ) since internal combustion engines first saw light of day !
Incidently, I'm a believer of K Liners, and that is that !