which reminds me, have you ever heard of or seen anyone take out the upper timing chain's SIDE guide? the one "across" from the tensioner? apparently it's not needed either, as i have heard many people chime up about recently, but it doesn't seem like it's as much of a concern of being a faulty part as the upper guide is. and looking at the design of the upper timing chain front cover and the tension of the chain itself, it really doesn't look like it is needed. i'm still tossing around the idea of building a motor, it's something im wondering about when and if i decide to do so, whether to keep that part or not.