Hi , 

Prep all surfaces to be bonded, so inside of the 32mm and outside of the 28.5mm. Easy enough to scuff it up, use a steel brush or a round sanding block or 80 grit sandpaper wrapped around something round like a permanent marker or similar. As for how much adhesive, it essentially depends on how much gap filling it needs to do. 

Make double sure your preparation and keying of the surfaces is spot on.  Roll wrapped tubes are made around a heavily release coated mandrel and wrapped in release coated shrink tape, so you end up with release agents all over the surfaces of the tube, so any areas not properly keyed simply will not bond with the adhesive.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

That's great, thanks guys , a little bit of experimenting with the glue

Acetone. I'd give it a wash with soap and water first, then wipe it all down with acetone. Then scuff the surfaces up really well, followed by another heavy wipe with acetone.