New to me, 1998 Seamaster 2561.80

Let me preface this by saying I'm new to the forum. I tried to do some digging and research before posting, but forgive me for my naivety. Heck, not even sure if a 2561.80 is considered vintage.

I saw someone local selling a 2561.80 for a steal. It's tough to pass on a bond style seamaster for me, so after asking some info on it I decided to pick it up for less than most Seikos. I do want to make a note, it has seen better days.

Here's the reason for my post. It had the original movement die on it, the owner sourced an ETA replacement 255.461 for it. Tried to do the install himself and had issues with the hands, marred up the dial and there's grime all inside the crystal. It came with all the original parts dial and hands. I've worked on watches before, I can clean up the inside, dial, hands, and do the installation but that will only go so far. Is the smart move to put it all back together as original and reach out to Omega to service/replace problem parts or is it feasible to source replacement parts and do it on my own with the ETA movement? I understand the risks involves in working on the watch. Any info or criticism is appreciated and warranted.

I appreciate the response. That is what I was thinking, service and replacement of parts will probably run triple what I spent on the watch. I'm just not familiar with sourcing parts for a watch like this. My main concern is that I am waiting around for parts to come available and paying a premium for them, only to find out that sending it to Omega was the smarter decision. Really all that is needed to wear it is two more links and the hand installation. After that it's all cosmetic, like the dial, hands, bezel, insert, and polish.