New member saying hello to all. Great site. Long time GN owner. Heres my problem. Last summer I broke the ring&pinion,posi-unit and trans 1st gear. 200 4r trans. Repairs were made and now the trans doesn't down shift to 1st gear everytime. Low manual works fine. If I go from D to N and back to D it'll go to 1st gear. It'll go through many shift cycles ok and then many cycles with no 1st down shift. I suspect a sticking govenor or valve. Any other ideas?