DJs J. Malls and Gordy G have created one of the longest-running theme parties in Pittsburgh with their dedication to 45s, good vibes, and making old-school soul, funk, R&B, and disco music new again. When asked how many records they own, Pittsburgh DJs J. Malls and Gordy “Gordy G” Greenawalt estimate that their respective collections number in the thousands. “I've got like, 30 boxes of 45s just lined up in this hallway outside of my bathroom,” J. Malls tells Pittsburgh City Paper about the situation in his Braddock home…