2011 KTM450SX-F clutch goes spongy! 01FEB2020

I took the 2011 KTM450SX-F out today! Haven't ridden it in almost a year. Battery tender showed good so I gave it one last look over before loading it up. When I got to the staging area I turned the gas on and it had a very slow leak at the petcock. Cycled it a few times and it quit leaking. Ran the battery down trying to start it and ended up hooking the battery jumper cables up backwards at the truck and blew a fuse on the KTM. Replaced fuse and all was good until the clutch went spongy about halfway through the ride right when we were going into some more technical areas! It's all good now! Lol!