I have also found that upon making this the swr can start off high.
What i did was get a small piece of pipe(non cond) and wrap the braded
wire around this about 4-6 times. this stebled thing's out and brought
the swr down to 1.4. using slight ajustments to the lenth and coil gap
of the braded wire and keeping the coax from touching the floor you can
get the swr down to 1.2. so got a load of spare coax and a swr meter
then why not have a go and see if you can improve it again