McCormick CX105 Tractor Having Some Issue 

Did you use correct hydraulic oil? Oem... i put in shit that gought some where as general hydraulic oil and it did same thing , and in cold would shift the extrashift thru both gears...

When you have the switch down, you are not in «gear 1, you are actually in top gear. Just a fun fact

Did you solve the problem

selam usta bi sorum olcakti

Solinodes most likely