I got mine and while excellent materials and craftsmanship, they wouldn't fit my cab and E120 either though not because of the clips per se but rather because the mounting holes had been predrilled based on different dimensions. A friend has them now to ask his friend with an automotive-oriented machine shop to trim the clips per my instructions to get them to fit.
"For me, I think the only danger is being too much in love with guitar playing. The music is the most important thing, and the guitar is only the instrument." Jerry Garcia