BUJI

I had this same problem. Had a roving science lab on Mun that was full of science like a thanksgiving turkey, it would transmit to 100% and then just start over again. Sometimes I would leave it to go check on another ship and come back to try it again to find it stuck etc. I fixed it by sending chauffeuringineer Bill out with a KAS wrench, removed the antenna, and re-attached it. Worked like a charm after that. I have KIS, KAS, Planetshine, and EVE installed mods and that's it.