Reel Repair by Alan Tani

The ARB on my Trinidad 10A is toast, it seems to be frozen. Anyone know what size it is? 
Any trick to replacing it.
This is my first time in a Trinidad A series. I have a few more to do, any surprises?
Thanks

I found one on eBay, looks pretty straight forward, famous last words

Is the bridge sleeve post supposed to be loose on the bridge?  It moves around 15-20 degrees past vertical. Seems odd it should move like that   Is there supposed to be a bearing there?  It looks like it on the schematic
I bought this reel used and it's served me well.  I'm thinking someone has been in it before, the drag washers are small compared to the replacements from smooth drag. Also there's a funky screw that doesn't look original like the others

Here's a picture of the drag washers and the replacements