I have recently inherited Mum's knitmaster ES302, I am finding it difficult even with the internet to locate a supplier for new replacement needles for this model. I have ordered some, but although they were the same length, and of good quality, towards the latch they are convex instead of being like the original concave in shape. Would appreciate any suggestions.
You might try emailing Ask Jack & the Answer Lady (YouTube), very knowledgeable and busy, probably your best shot, they will answer emails, but only as their time permits.
According to this website, lacecarriage.com, the needles are the same as for the SRP50 and SRP60 ribbers. Shouldn't be too hard to find.
Thanks for the info ladies, very much appreciated, will let you know how I go.