do you have any room say 1/2 inch tops is all you need if can run to Menards and get the 2-3 foot grabber tool that is thin and has a claw on the end to pick up things? It has saved me a couple of times on cars dropping bolts, etc. down on frame, etc. where I needed a thinner and longer arm to get in there to get the bolt, etc. out.
https://www.menards.com/main/plumbing/drain-cleaning-tools/plumbing-snakes-augers/multi-purpose-drain-grabber-2-pack/pf0412/p-1562653725278-c-8514.htmthey make one with a magnet as well I think they come in handy for clumsy people like me.
Do not feel bad, I spent 4 fricking hours last night getting 3 toilet top bolts loose been on top tank for 27 years OEM poddy. Wife held bolt on top with vice grips while I used vice grips on bottom with open ended 9/16" wrench 1 inch at a time. 3rd bolt I gave up tank top was loose so wedged a hacksaw in there on the last of 3 bolts and cut the darn thing off. The rest replacing the guts inside poddy took less than 1 hour but 3 bolts took 4 hours to undo. Now, the bolts I replaced are leaking even tight with rubber washer on them both inside tank and on bottom with nut and metal washer and rubber washer to seal. You wanna talk about pissed off!
