<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">There is probably an answer to this in some SBF book but I haven't found it yet.</div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">There is a thin ring that was under the 260's flywheel bolt heads somewhat acting like a washer or load distribution flat ring. Since I'm building both the original 260 & the HP 289, I don't have another of those rings with the 6 holes for the flywheel mounting.</div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">Does anyone know if that part is absolutely necessary?</div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Rob Hogan<br></div></div></div>
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