Yes indeed! But the Kylchap still moved them on to another level. I wonder what Ell could have done with out the SC gubbins. I've checked 'The LNER 2-8-2 and 2-6-2 classes' by J.F.Clay and J. Cliffe. The same quote regarding work on the GCR is there but it is still not clear whether they are comparing the Ell modifications with an unmodified V2 or a modified SC one . There is now information available to cross reference some of the logs they supply with what state the locos were officially in, but of course we cannot now know whether the SC gear was actually fitted at any given time - on a loco just out of shops it would be more likely to be there than one that had been in service for months, which might explain the poor performance they experienced with units 'just out of shops'. compared some fine performances from 'dirty old warriors' . Page 85 of the above book has some interesting comments which suggest that the original engines on pre-war coal would have been able to achieve the same performance as the Ell modified ones. So it is likely that the Ell modified ones with SC gear would have been better even than an unmodified loco on post war coal. We still have no direct comparison, however. According to their calculations the Kylchap increased the output by a further 15% or so above the original performance and the Ell modifications. One criticism made of the V2's was that they were relatively poor at slow speed slogging - of course they were never designed for such, they were intended to handle fast fitted freights. A stud of Kylchap ones with air brakes would probably have done very well with the early Freightliner services had they lived long enough.