Dynaco FM-5 Tuner. Useful "Mods" for the unit??

I recently bought a Dynaco FM-5 from ebay. It was advertised as having been "hotrodded" by Rich Modifferi--- the mod was a PLL board and Dolby deemhpasis. I bought the unit to see if I could get a station which is 125 miles from my apartment house.I hooked the tuner up to a Fanfare SG-1 and it did receive the station clearly, but there is still some noise and flutter. Overall, the sound is tinny and harsh even on local stations, but also seems to possess more "depth" than the tube tuner of the McIntosh receiver 1700, I also use. By the way, the Mac could not receive this distant station at all. So whatever Mr. Modifferi did to this piece, he increased its selectivity. So, does any one know if this piece can be further "moded" to improve selectivty and smooth out the overall sound?? Or, is it not worth it. I don't want to spend alot of money either. Help!!. I know there are many knowlegable Dynaco fans on the 'GON. I don't just want to put this piece in my closet as wasted money. Thank you, SJ