We just purchased a 40 year old log home a year ago. The exterior was originally coated with creosote and has not been touched since (as far as we know). There is no rot, no insects and the logs are very dark from this original treatment. However,some sections are fading that are in direct sunlight. What is recommended for re-staining over the old creosote finish? We dont mind the dark color. We cannot afford corn blasting at this time. Thank you in adavnce