To all, many thanks for infos and prompt support. It was a hard work to remove the old 3 seals. I had to fix long screws and than to pull them out with a good lever somehow. Best way is to find where the seal is cut and pull out first one extremity. Than I have put in position each seal at 120° The new white seals/ring are from SAV_AMEL . On the way to Madagascar I'll check the situation, ready to turn how much necessary, little by little. Let's see- All the best Buon Vento Giovanni TESTA sv EUTIKIA SM 428 La Reunion