Chipping the night away. The Lima Class 67 has had a Lenz LE1014E chip installed whilst the Bachmann Class 08 received a Zimo MX61. I had hoped to chip 4 or 6 locos, but the Lima 67 took a lot longer than expected. The 67 is very poorly designed and features a circuit board that is best thrown away. Had I done this then the conversion would have been as quick as the 08, but I wanted to do it the 'official' way in order to do a step-by-step photo guide. Bad move!
I also spent an hour or two swapping chips, test running and tweaking the thing in an effort to do something about the noise. Best results were obtained from another Zimo chip but I'm not about to waste something of that quality in a Lima loco. I settled on the LE1014E in the end because it was almost as quiet and nearly as smooth.