Carver Owners Forum

I have a 1988 Carver Mariner with twin 220hp. My boat does not have an aft cabin. My question is I'm looking for someone who has experienced adjusting or adding rounds of packing to the shaft seals. The design of the Mariner is such you can see the shaft and packing adjustment bolts via small floor access covers under the couch and dinette seat, but accessing them is nearly impossible. The only way I see to make any adjustments to the packing is by removing the V drives. There is just no room for wrenches especially on the port side. Has anyone out there ever owned a Mariner and has made this adjustment?
Need help and advise!