Did the guy clean your throttle body? He said it was dirty but did he clean it? It really hard to tell what kind of hesitation you are having like Maxwedge said. It sort of sounds like you might have an ignition misfiirng situation when you are under high vacuum conditions like between shift, but I'm not sure. I think you should use original AC type plugs gapped around .045. Check the coil primary (and secondary if you happen to have the coils off) and ignition wires resistance. Look for vacuum leaks. It'd really help if you could get a scanner on it, but you have that wonderful '95 OBD 1.5 that no one seems to have the scanner for. Just for sh1ts and giggles see what happens if you unplug the EGR connecter wire.