Soft top slight "ripples"

[Rob175]

Re: 98' soft top w/plastic window
I've recently noticed that there are two slight "ripples" appearing on my soft top when the top is down. Both appear at the rear, very close to where the top and rear deck meet. One is on the left side and the other is on the right side. Both "ripples" sort of mirror each other in their position and appearance.

Basically, there seems to be some newly developed "slack"...and when the top is fully open it seems to be looser that in the past, where you could bounce a coin off it.

I've checked the two cable attachments and they are attached properly along with the rain cuff.

The top seems perfect until the rear deck closes down and it's at that point that the two ripples occur. I also checked the 4 rubber cushions, attached to the underside of the deck lid and they appear to be in good shape too. I believe those rubber cushions are designed to put pressure on the cloth and keep it taught. So even though they appear to be in good shape they might be the problem. I don't think they have any adjustment.

When the top is up all is perfect and tight with no ripples.

Any suggestions as to what can be causing the top when down to not be as smooth as its been in the past?