After losening the radiator clip, did you move the radiator sideways?
If its still hard to reach, drain the radiator, remove the hose and get it out of the way completely. You could use this opportunity to flush the radiator and change the coolant as well
If its still hard to reach, drain the radiator, remove the hose and get it out of the way completely. You could use this opportunity to flush the radiator and change the coolant as well