What Wilkie said (some resistors can have very thin leads) . . . PLUS . . . . I’ve often had socketed trannies work themselves loose. If there is NAY slop in the insertion force needed to get the tranny into the socket, slightly and carefully “wrinkle” the ends of the tranny’s leads so they are not straight when so inserted into their respective socket pockets. The slight ‘wrinkle’ will ensure there is a good connection in the socket(s).