[motornut]

Hi ,and Welcome,my 203 is changed as well
not sure about your issue but when it's converted it needs to be lubed up by running in 4X4.
I do it hubs unlocked a mile or two,move the shifter,so far so good!
and yes it will go 4X2 in low,but you don't want to run the front engaged on pavement or it will bind up.
I did use the front alone one time ,rear drive shaft was out,replaceing ujoints
dam hope nothings broke on ya