Just picked up a case used on the "closed" factory Omegas with the correct HE valve placement from back in the day. However, it did not come with the crown (nor the stem). I tried using another crown and stem from a spare Omega that I have, but the crown is way too big to screw down.
For those that have the closed factory case, can anyone let me know how big the crown is/measurement? 5.2mm, 5.5mm, 5.7mm ???
Any help is much much appreciated.