Hi,
I had a similar experience some time ago. One of the other club members pointed out that I was holding a sun shade ( the transmitter)[:@]. Now when this happens I hold the transmitter up to block out the sun, by definition it is also pointing at the model. If it isn't it's back to the workshop.
In Australia we have the dubious claim to having the highest rate of skin cancer in the world. For your own protection always wear sunglasses, hat with brim, and sunscreen. Clothes help too

.
Cheers,
Colin