Indicator Spinner Tricolor

I received 3 of these flies, 2 were perfect and I caught trout immediately using this pattern.
However, 1 was poor, with the thread holding the materials together starting to unravel, making the fly unusable

Purchased this fly patterns with a number of others and they arrived in Sydney really neatly boxed in great condition only 10 days after I purchased! Will definitely be restocking my fly box with flies from The Essential Fly! Tight lines. Leon