Anyone know what the heck this small flat plate andslotted screw are?  They are located on the forward left side of my 100 engine backplate.  It's the only one on the backplate.<div id="yMail_cursorElementTracker_1589863134225">Mike MacLean<div class="yahoo-compose-assist-image-card ymail-android-inline-img-container ymail-card" contenteditable="false"><img id="ymail_attachmentId32424" class="inline-image-global inlined-image-cid-05563924-313e-4ef7-b4cd-61401e53f2c0" src="cid:05563924-313e-4ef7-b4cd-61401e53f2c0" style="width:100%;max-width:800px;"><br></div><br><br><br><div id="ymail_android_signature"><a id="ymail_android_signature_link" href="https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature">Sent from AT&T Yahoo Mail on Android</a></div></div>