From your description, the first thing I'd check is the amount of neck relief. Symptoms sound like the amount of neck relief (bow) has increased. If it is excessive, it may need nothing more than a small adjustment of the truss rod - I'm assuming it has an adjustable rod. That will INDIRECTLY, improve string height at both 12th and nut.
I don't understand the connection between refretting and the forestalment of a neck reset, unless the frets were graduated in height.
Fixing a lifting bridge by injecting glue and then clamping is debatable as to the appropriate method unless hide (or fish) glue was used originally and subsequently. If CA glue was used, then definitely not an appropriate fix.
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