I finally received my 166.0324 back from the Omega service centre where I had a new crystal fitted. I have a question regarding the spring-bars. My understanding confirmed by the watchmaker is that for rubber straps the OME - Spring-bar - 03 is the one to use.

I have found that the spring-bar fitted seems a bit loose in the watches lug holes which makes me a bit nervous about security. I got these similar 2.0 mm bars from Ofrei which seem to have a more snug fit: http://www.ofrei.com/page1229.html, Swiss Made 2.0mm Thick Double Flange 20 mm Spring Bar. Does anyone have any similar experiences with their SM 300? If possible Id like to use the gen spring-bars. (Apologies if the posting of a link is inappropriate but I figure everyone here is more that familiar with the parts supplier anyway)

The other bars Ofrei have are: Swiss Made 2.0mm Thick Double Flange 20 - 22 mm Telescopic Spring Bar. When would it be appropriate to use one spring-bar for both 20 and 22 mm lugs?