my experiance with the old papers (very out of date, namly the agfa protagia) is that nothing really helps, and it doesnt worth the efforts even for proof-like prints, surely not for prints for exhebition or any high quality needs.
if u can, just change it in the shop for a new verssion if u like the paper generally.
i want to start to use it (the maco or the fotospeed) soon instead of liqued emulssion (at those times that i apply the liqueed the way that this maco will look about the same).