These results were extracted for the $15 \leq E_m \leq 22$ MeV bin using NLSH wave functions and the EDAD1 optical potential. \[table:normpara\_EMAnoSV\]

In order to improve standard NRDWIA calculations for parallel kinematics, van der Steenhoven [[*et al.* ]{}]{}[@vdSteenhoven88a; @Ireland94] resorted to adjusting the overlap function, the optical model, and the current operator simultaneously. The NIKHEF analysis used the nonrelativistic expansion of the current operator in powers of $p/m$ proposed by McVoy and van Hove [@McVoy]; we verified that at second order this expansion, denoted NR2, gives results that are practically indistinguishable from our EMA-noSV calculations. Their analysis also used a nonrelativistic optical potential produced by Comfort and Karp [@Comfort80], denoted CK, and a Perey factor [@Perey62] for the ejectile with $\beta=0.85$ fm. Figure \[fig:NR2-para\] compares several variations of the NR2 calculations that are similar to those of van der Steenhoven [*et al*]{}. The dashed curve uses this optical potential and current operator with the upper component of the NLSH wave function and fails to reproduce the data for parallel kinematics with $p_m <0$; the results are similar to those shown in Fig. \[fig:NIKHEF-para\] in the EMA approach. The narrower NIKHEF momentum distribution improves the fit to the data but 