Block anode removal 2000 225 ox66

[saa84444]

I removed and replaced the shorter block anodes on my 2000 225 ox66 but when I tried the longer anodes I could not get the 1st one to budge (I then stopped). Should I leave the longer ones alone? I do not see any visible deterioration around the anode. Would spraying PB buster help loosen. I have seen some posts where drilling out center and using a slide hammer may remove zinc. Any input would be appreciated

[boats.net]

Yes probably will have to drill them to get out.

[rodbolt17]

and if you break one off you must remove the head and retrieve it.
its why if its not done once a year OR every 100 hours simply leave it alone.