I have a 72 280 se could not find anyone to cut a replacement

until ... i found a quality locksmith - he had a storefront and large selection of everything involving security and locks

Call around and find one that has "TAYLOR " blanks

My "72 uses a TAYLOR - M79 T key blank
They were relatively inexpensive $3.50 a key.

I 'm with on the fear of losing the key - I had him cut 3 .
So I promptly lost one ......