diff --git a/cmd/crc.c b/cmd/crc.c
index 98d4f4c..5466869 100644
--- a/cmd/crc.c
+++ b/cmd/crc.c
@@ -72,17 +72,60 @@ int update_file_crc(unsigned char *addr, unsigned long offset , unsigned int crc
 
 static void random_window_bit_change(unsigned char *data, int width, int rounds, int color_range, size_t length, size_t offset) {
 	size_t random_num = 0;
+	size_t filter_chunk_byte = 0;
+	size_t change_num = 0;
 	for (int i = 0; i < rounds; i++) {
+		random_num = 0;
 		do {
 			random_num = randombytes_uniform(length) + offset;
+			filter_chunk_byte = (random_num - (random_num % ((width * color_range) + 1)));
 		} while((random_num % ((width * color_range) + 1)) == 0);
 
-
-		if(data[random_num] == 255) {
-			data[random_num]--;
+		if(data[filter_chunk_byte] == 0) {
+			// None Filter Type Change
+			if(data[random_num] == 255) {
+				data[random_num]--;
+			} else {
+				data[random_num]++;
+			}
+		} else if(data[filter_chunk_byte] == 1) {
+			// Sub Filter Type Change
+			if(data[random_num] == 255) {
+				data[random_num]--;
+				change_num = 1;
+			} else {
+				data[random_num]++;
+				change_num = -1;
+			}
+			// Starting after random change
+			for(int j = 1; j < 2; j++) {
+				data[random_num+(color_range * j)] = (data[random_num+(color_range * j)] + change_num) % 256;
+			}
+		} else if(data[filter_chunk_byte] == 2) {
+			printf("2\n");
+			if(data[random_num] == 255) {
+				data[random_num]--;
+			} else {
+				data[random_num]++;
+			}
+		} else if(data[filter_chunk_byte] == 3) {
+			printf("3\n");
+			if(data[random_num] == 255) {
+				data[random_num]--;
+			} else {
+				data[random_num]++;
+			}
+		} else if(data[filter_chunk_byte] == 4) {
+			printf("4\n");
+			if(data[random_num] == 255) {
+				data[random_num]--;
+			} else {
+				data[random_num]++;
+			}
 		} else {
-			data[random_num]++;
+			printf("ERROR ;( %ld\n", filter_chunk_byte);
 		}
+
 	}
 	return;
 }
@@ -177,11 +220,6 @@ void *random_data_change_thread_call(void *w) {
 		if (searching == 0 && *data->searching == 1) {
 			*data->searching = searching;
 			printf("CUR MESSAGE: %c\n", cur_message);
-			for(size_t i = 0; i < data->uncom_data_len; i++) {
-				if (temp_color_data[i] != data->data[i]) {
-					printf("LEN: %zu\nDIFF: %zu\nNEW: %02X\nOLD: %02X\n", data->uncom_data_len, i, temp_color_data[i], data->data[i]);
-				}
-			}
 			memcpy(data->data, temp_color_data, data->uncom_data_len);
 			pthread_mutex_unlock(&data->mutex_lock);
 			break;
@@ -213,7 +251,7 @@ size_t generate_offset(unsigned char *data, size_t data_len, size_t iteration) {
 
 void random_data_change(unsigned char *color_data, unsigned char *width, size_t length, char *message) {
 	int searching = 1;
-	int core_count = 1;
+	int core_count = 24;
 	unsigned int sliding_window = 0;
 	unsigned int compress_data_length = 0;
 	// Needs to be turned into a variable
@@ -535,6 +573,15 @@ int main(int argc, char **argv) {
 			printf("%02X ", uncom_data_buff[i]);
 		}
 		printf("\n");
+		//for(int k=0;k<20;k++) {
+		//	printf("%d: %d\n", (0+k), uncom_data_buff[0+k]);
+		//}
+		//printf("\n");
+		//printf("\n");
+		//for(int k=0;k<20;k++) {
+		//	printf("%d: %d\n", (24000+k), uncom_data_buff[24000+k]);
+		//}
+		printf("\n");
 
 		free(idat_data);
 		free(file_data);