Lights keep tripping the gfci, moved all lights to separate outlets,timers etc but the still continue to blow, one strand (4) was blowing gfci so moved plugged it into timer then plugged timer into another strand, other strend stays lit but moved strands still go out

With the info u supplied unable able to answer questions.

There are too many variables.

Number lights in strand.

Type of bulbs.

Have u tried set that does not light by its self?

I have found that it is cheaper to replace a strand that is not working then trying to repair. This does not include changing blown or broken bulbs.

Please use a sentence structure. Makes it easier to read.
Chuck