I've known modelers who hate locating pins, and always remove them. The technique they used was to apply multiple coats of slow solvent cement to the mating surfaces until the plastic is quite soft, then carefully fit the parts together. IF you use enough of the slow solvent, the plastic stays soft long enough to adjust the fit slightly. The trick is to use enough of the slow solvent. If not, the parts stick together but can't be adjusted. I tried this technique on my 1/32 P-40E build, and it worked fairly well, with minimum filling at the wing roots.
Formula for slow solvent cement: 1 part toluene to 9 parts methylene chloride (also called dichloromethane or DCM, and methylene bichloride).
Formula for very slow solvent cement: 1 part xylene to 9 parts methylene chloride.
USE ONLY WITH ADEQUATE VENTILATION!YESYES