We have all done it, and when it happens, it's usually at the most inopportune time...missed shifts. This is something that I have developed over the last few years (thanks for the inspiration Dave W), after making sure all linkage connection points were nice and tight.
1st/2nd gear locator: Put the trans in 1st gear and attach lock collar onto 5/8 shift linkage next to driver. Align collar so tab is just touching the underside of frame tubing. This gives a positive left side stop point locking out reverse (and eliminates the no mans land between 1st and reverse). Before tightening, make sure gap between collar halves is equal...this will prevent binding when tightening and loosening. Position release lever where desired and tighten lower screw. If reverse is needed, 1/4 turn on the release lever loosens the collar.
3rd/4th gear locator: Install lock collar with small tab onto 5/8 linkage near transmission (make sure it does not interfere with fore and aft movement). With trans in neutral, tighten collar with tab at 3 o'clock position. Install lower spring bracket with provided hardware. Orient it so spring tension "pulls" the gear selector to the right side ( 3rd/4th). Start with tab at 10 o'clock position. When coming out of second, spring tension automatically pulls the gear selector to the right side for seamless 3rd and 4th gear shifts. This is adjustable to driver preference.
Its like having a gate without the gate. Everything made from 304 s.s. I made up 4 complete kits when I made mine. $80.00 includes shipping. Please verify the dimension on the 1st/2nd locator will work for you. My car is a 2012 Elan V.D. I was working with Brad on these just prior to his accident/stroke, and hope to again soon. I just wanted to get a few of them out there early this season.
ej
ejkorecky@yahoo.com