I note lowering blocks on the first picture, but missing on the second. I've read that they have an adverse affect on handling - could this have exascerbated the poor handling issue?

"Y mae dafad ddu ym mhob praidd"
1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10