I am looking to go back to a 32 on the front as I had on my old bike, will I need to add any links to the chain?
was your old bike the same wheel size/type and running the same cassette?
apologies if you know this already but if your old bike was a 26er and you’re now on 29+ the swap may leave you with rather tall gearing. Plenty of gear calculator apps around to check.
Is that existing 28T 64BCD?
If so, biggest ring you can replace it with is 30T, IIRC.I thought BCD only limited the smallest ring you could put on, bigger is fine. Sure enough manufacturers aren’t likely to make a 53t 64bcd ring but I’d have though 32/34 rings would be available.
<edit> oh and good luck, cinch was easy to swap over but getting the cranks off was a job and a half, mrs stood on the crank arm, me stood on the long allen key, CRACK! as it undid. Maybe no grease/antiseize when fitted, dunno, worried me tho.