Pulled out my schematic.....I'd say....
Right under the cover is a spring...."Baitrunner Clicker Spring".....which is attached to the "clutch plate assembly"....that's all those funny looking plates and levers you'll see.
Somehow, I don't think this is the problem, but it worth checking to make sure it looks okay and looks like it is where it belongs.
In that area, but towrds the bottom, there is also a "Clutch Pawl Spring", but short of you having the schematic, couldn't possibly explain where it is.
If it's not one of those two things, then it's much deeper, such as the "Baitrunner Pawl Spring" or the "Baitrunner Guide".....and at that point, it's so deep....take it somewhere that knows what they are doing.....otherwide you'll have a lot of spare parts lying on your bench....and a totally non-functional reel....
Unless Arby chimes in on this....I contacted him and hopefully he'll be by with his 2 cents in awhile......