I have a recon 250ES it will not shift gears. Electric shift will not work the manual shift will not work. Change angle sensor did nothing checked shift motor hooked it took a battery the motor spins I think it is fine. Tried to manually shift with the shift motor off nothing. Checked battery ECU connection look good. I do not know what to do now. Do I need to split the case and check gearshift drum? Never done this before any help would be great I am very much a rookie. I have read a lot of threads to get to this point. Please help. Thanks.