Editing Tech in JSON Save Game (Vanilla)

[WonGyunSailsAgain]

Hello, apologies if this has been solved. I have looked over this forum, youtube and reddit for solutions and they haven't been clear.

My current campaign is running into the tech cap issue where certain components are not available (notably, Gas Turbines, Oil III, Shaft V, Aux Engine 5 and Triple Base- Because why would someone want those when they could have a spastic random tech tree instead? /s). 

I assume this requires both modding 'Tech Years' and the player technology level. Unfortunately, I don't know what I should do to unlock. I tried changing some of the tech year values from say, -1 to 1 but that did nothing. As did changing values for the player. I am at a loss.

Anyone have any advice? Or is there a way to just delete the random tech tree "feature"? With the game finally "stable" maybe this could get permantly fixed. I'd rather not go into a comprehensive mod like NAR/DIP because I'm saving those for after I do a "perfect" vanilla campaign.

 Anyways, any help would be appreciated and sorry if this is redundant.