Speedsonic 188.0001 crystal replacement ?

I just acquired a Speedsonic 188.0001 with the rectangle pushers (strap although I am curious about the OG metal strap). It’s in the mail but I’ll post photos once it arrives late next week. It certainly has its flaws as it was a loved piece but given production numbers and price I felt compelled to get it. Reportedly fully functional. I do plan on sending over to Rob for an overhaul after I have had it for a bit of wrist time as he is busy.

The crystal is in need of replacement. I have replaced many Seiko crystals on 6139’s, 6309 etc. I have yet to replace any Omega crystals (See my other thread on my Mark II where I have the crystal and fantastic instructions to make a jig from a member here- and the pvc parts under my desk - but have settled in to enjoy that watch with its small issues. Call me chicken😂)

This brings me back to the speedsonic.

I was wondering if anyone here has replaced a crystal and if it would involve anything more than careful use of a regular press (which I can handle) or if the crystal install might require an omega jig/fabricate my own jig.

I recognize there are not many of these out there but thought I would ask the question here before popping the crystal out only to learn I couldn’t get the replacement back in.

Thanks so much

I should add I can source the crystal but not the gasket. By chance does anyone know the part number so I can do a more focused search?

Fantastic. Thank you. The hunt begins

Has anyone replaced this crystal? Mine looks to be in rough shape and I’m contemplating replacing the crystal even if I can’t source a replacement gasket before eventually sending it to Rob for a full service. It’s worth the $60 to me to get a replacement crystal of I can install it reasonably easily like other crystals as it may be 6 or more months before I send the watch to Rob (and wait the 3 or so months to get it back with his backlog and shipping delays).
Eager for DHL to deliver mine but looking at the pictures the crystal is rough