Broken/glitchy input controls after spillage damage cleanup

Hi everyone,

I'm hoping someone will be able to help with this. A few weeks ago I was travelling with my Steam Deck OLED. Unfortunately, I had a bottle of Irn-Bru (soda type is relevant I believe due to it's orange colour) that wasn't sealed properly, and my bag was drenched with the Deck inside. I had an aftermarket case so it got completely flooded.

As I was travelling, I didnt't have access to tools, I was able to turn off the deck and had it drying for over a week turned off before I got home (the battery wasn't disconnected as I couldn't get access but it was powered down).

I got home and started to take it apart (thank you so much for the teardown guides, they were invaluable!). There were a few orange red splash points and I was aware of the triggers and buttons sticking. So I took it completely apart and used a combination of cotton buds, Deionised water, and isopropyl alcohol. some of the parts, particularly the side connection boards for the trackpads and thumbsticks were covered. But I persevered and cleaned everything up, some of the parts were really bad so I used a wash station to remove as much of the orange residue as possible.

I allowed everything to dry that evening (that was after washing off the water with alcohol) and reassembled the Deck (Again, I cannot stress how useful the guides were for this. I left the back off to allow things to evaporate.

The next day, I powered it up, and it posts, goes into the bios screen, but I can select Continue and it'll boot into SteamOS. Screen works great, touch and display, speakers are fine, and it can connect to wifi.

But the buttons and triggers are a mixed bag, they don't map correctly and when I press B for example, the haptics in the right trackpad triggers. So I can only assume things are shorting unexpectedly.

I've left it off for now to dry further, but I'm wondering if there was any kind of contact grease in the deck for the connectors. I looked at some options and saw the one iFixit sells is a reddish orange liquid... which I think I've been studiously removing from the entire machine.

Would anyone happen to know if this is the case, and if it isn't, would something like the DeoxIT® Contact Cleaner 25ml Needle Dispenser available on the iFixit store be a good idea to help with the low voltage shorting I'm seeing?