Chuck, you won't be sorry you got the J&S. I have had mine for about 2 years and use it all the time. My Road King sits on it solid as a rock. Very easy to slide it under the bike, put the back runner inside the rear frame channel and jack away.

 

My yellow jack picks up my 2004 Ultra just fine......
I don't know about a 'sweet spot', but if the front wheel comes
off the ground first, just move the jack back an inch or so and
try again.
I used to have a Sears RED jack, but it would not fit under my softail
without putting the bikes front wheel on a 2 X 4 first.
It would have worked well with my Glide.
(jacks can be tricky I guess)

 

Yup, the yellow one is made out of recycled Cambell soup cans -the red one has got to be 50 times stronger.

~John

 

That's the problem. I had the yellow jacks as far back as possible. There is a crossmember further back that the yellow jacks would not fit into - at least on an 07 Ultra.

Thanks all...

 

You'll be glad you spent the money for the J&S....solid as a rock!

 

I bought the yellow and use it with no problems but I also have no other experience with different ones.

 

No problems with the yellow jack wheel both my bikes all over garage with them

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have had the red one from sears since 2000 and have never had any issues!!!!!

 

I made the same mistake, J&S rocks.....................

 

I have hadthe red jack for yearsand it works great, I purchased a yellow one a couple of months ago, I took it back after trying it twice.
That old red jack is rock steady and the yellow one is a wobbling piece of junk compared to it.