in my 89 renix i had a 242 t-case in it originally. i just swapped a 231 in it. my question is are there any mods i need to make to the linkages or shifter. it seems to work fine. i was mainly just curious that when i put the tcase back into 2 wheel drive i cant feel if its fully engaged. i also just installed an AA sye in the 231 and i had to cut the shift shaft that sticks out the back of the case to AA's specs. the reason im asking is because whem i used to shift modes in the 242 it would bang into gear and u would know it was engaged. the 231 with the new sye is almost too smooth. also wondering that on the 242 i had 2hi, 4part ,4full, and 4 low. do i need to change the little shifter guide to one that is for the 231 or are they the same? thanks.