What is this guide tube that we all see on Ebay? Uncle Rocco doesn't have one nor did any rocco I've ever owned. Now, I have the old style coathanger dipstick and I'll admit it's hard to find the hole sometimes. :) WTF Is this a possible upgrade. Steve Szuba <A HREF="http://hometown.aol.com/calawaymk2/myhomepage/auto.html">Callaway Turbo Scirocco #10</A>