Well first off ..the paint thats seen cracking and upheaving is failing...in time it will just flake off...it was improper paint prep at the base and primer coat..what happens its the open cracks will absorb water and primer will absorb it also and rust blooms will start in time...
Now for the pine sap blobs...get some plastic razors ..and a ice cube..freeze the glob and then pop them off with the razor...they pop off very easy this way...then wipe the remaining sap with Turpintine....
you could clay the hood but you may encounter the clay grabbing and sticking to the paint defects like the cracks and leaving clay in them....I would just do a good polishing on the defect areas and seal it
A strip and repaint is in order for those areas...in time it gets worse if not taken care of...its not clear coat failure..its a failure right to the primer...
AL
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