I've found Dodd this morning. He is LAC Henry Stanley DODD R89374 RCAF Fitter IIA
This was a bit slack of me as I found a detailed report in the 422 Appendices giving all the names. I don't know how I didn't find it before. TNA version is out of focus but the microfilmed LA Canada one is very well reproduced, and without the watermarks. It can be found here
Image No. 874