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I don't know what era RED you have so this is from some experience, but not exact.
Essentially a DIY method (same as using BBright BB's on BB30A for Shimano stuff) which will work, it's just not the cleanest method.
The BB is asymmetric towards the NDS, so that's where you'll make your adjustment, as doing it DS will just fuck shit up.
Un-thread preload adjuster. Install bearing cap, washers then a wavy washer. How many depends really. Till there's no play, but it's not too stiff.
Chak-
Sounds reasonable enough. I'll give it a bash once they turn up. I suspect I'll go with the Reds over the SI even if its more of a hassle. Some CAAD models came with hollowgrams so I think the full SRAM just makes it a bit different. Not that being bright orange doesn't already do that
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You're not working in a workshop any more I take it?
PhilDAS
Okie doke, it does have the preload. But for BB30a I read I will have to remove this entirely to gain enough length on the axle. Such confuse