I've got horrible creaks coming from the bottom pivots on my Anthem. It's ye olde Mk1 style, none of yer fancy modern AnthemX stuff – I'm planning to whip the rear triangle off and give it a general clean up and fettle to see if there's anything obvious amiss, but if it's the bearings is that a DIY job or is LBS best as I think the bearings need to be properly pressed in?