Double stranded dna Sequencing help

[Mozart de Azevedo Marins]

Hi there,
              I have to sequence three clones that I will use to express 
in Drosophila. I am having some problems with the sequencing due to too 
much stacking of the bands. I know this can be caused because of 
secondary structures and so on, but I would like to know if somebody can 
pass me on, let's say, the latest version of the best method for 
sequencing doubled stranded DNA. I use the Pharmacia kit, does anyone 
uses something else besides what they provide ?
thanks,
Mozart